Newspaper Ad-  Put an ad in the local paper something like this-

When the CPS comes to your door...
CALL US FIRST!

Don't let them in or talk with them until we get there.
We will video tape them asking their questions
   -If they try to get you to surrender your Fourth 
    Amendment Right to a Search Warrant, or;
   -If they try to get you to surrender your Fifth
    Amendment Right to have a witness present, or;
   -If they try to question you without giving you
    your Miranda Rights,
We will document their unconstitutional behavior
to be televised.
You have the Constitutional Right to be
LEFT ALONE in your American Home

Your Advocacy Name
Your phone number
Your Advocacy Website
Member of American Family Rights Association
http://www.familyrightsassociation.com